V2EX instrumentation amplifier

Instrumentation Amplifier

释义 Definition

仪表放大器:一种高精度差分放大电路/器件,用来放大两个输入端之间的微小电压差,并能强力抑制共模信号(如噪声与干扰)。常用于传感器信号调理、测量与数据采集系统。(也常写作 in-amp

发音 Pronunciation (IPA)

/nstrmenten mplfar/

例句 Examples

The instrumentation amplifier boosts the tiny voltage from the strain gauge.
仪表放大器会放大应变片产生的微小电压。

Because it has high input impedance and a high common-mode rejection ratio, an instrumentation amplifier is ideal for reading bridge sensors in noisy environments.
由于它具有高输入阻抗和高共模抑制比,仪表放大器非常适合在噪声环境中读取电桥式传感器的信号。

词源 Etymology

Instrumentation 来自 instrument(仪器、仪表)加后缀 -ation(表示“过程/结果”),强调“测量与仪器系统”。Amplifier 来自 amplify(放大)加 -er(“做……的东西”)。合起来就是“用于测量/仪表系统的放大器”,突出其精密测量用途与抗干扰能力。

相关词 elated Words

文献与作品 Literary / Notable Works

  • The Art of Electronics(Horowitz & Hill):在模拟前端与传感器读出章节中讨论差分测量与仪表放大器的应用。
  • Microelectronic Circuits(Sedra / Smith):在运算放大器与差分放大器相关章节中介绍仪表放大器结构与性能指标。
  • Analog Devices / Texas Instruments 的仪表放大器数据手册与应用笔记(如 AD620、INA128 系列):大量使用该术语并给出典型电路与测量案例。
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